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12386309 = 131950147
BaseRepresentation
bin101111010000…
…000000000101
3212022021211012
4233100000011
511132330214
61121252005
7210165455
oct57200005
925267735
1012386309
116aa0021
124194005
132748aa0
141905d65
15114a03e
hexbd0005

12386309 has 8 divisors (see below), whose sum is σ = 14041440. Its totient is φ = 10831536.

The previous prime is 12386299. The next prime is 12386317. The reversal of 12386309 is 90368321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12386309 - 24 = 12386293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12386369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24827 + ... + 25320.

It is an arithmetic number, because the mean of its divisors is an integer number (1755180).

Almost surely, 212386309 is an apocalyptic number.

12386309 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12386309 is a deficient number, since it is larger than the sum of its proper divisors (1655131).

12386309 is a wasteful number, since it uses less digits than its factorization.

12386309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50179.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 12386309 is about 3519.4188440707. The cubic root of 12386309 is about 231.3736884938.

The spelling of 12386309 in words is "twelve million, three hundred eighty-six thousand, three hundred nine".

Divisors: 1 13 19 247 50147 651911 952793 12386309